130 THE POLYPORACEAE OF WISCONSIN. 



color was a dark smoky-brown with an olive tinge, subtomentose near 

 the margin ; flesh thick, whitish with grayish-green colored spots. The 

 tubes were whitish when young but dark-gray or smoky in the older 

 specimens; they turn a dull greenish or bluish-green when bruised. 

 The specimens were nearly always much infected with larvae and often 

 exhaled a strong disagreeable odor. The species is closely related to 

 B. scdber. 



Series 2. EUCHROI. TUBES BRIGHT COLORED/ MOSTLY YELLOW. 



E. Luridi. Tubes depressed and free, stuffed at first, yellowish, 

 mouths red. 



Boletus venniculosus Peck (Plate XXIII, fig. 80). 



Pileus broadly convex, thick, firm, dry, glabrous or very minutely 

 tomentose, brown, yellowish-brown or grayish-brown, sometimes tinged 

 with red, flesh white or whitish, quickly changing to blue where 

 wounded; tubes plane or slightly convex nearly free, yellow, their 

 mouths small, round, brownish-orange, becoming darker or blackish 

 with age, changing promptly to blue where wounded; stem subequal, 

 firm, even, paler than the pileus; spores ochraceous brown, 10 to 12.5 

 microns long, 4 to 5 microns broad. 



Pileus 8 to 12.5 cm. broad ; stem 5 to 10 cm. long, 8 to 21 mm. thick. 

 Woods. 



'This species," says Peck (21, 2, 8, p. 141), '4s separated from B. lu- 

 ridus by its dry pileus, white flesh, even stem, which is neither reticu- 

 lated nor dotted, and by its smaller spores. I cannot distinguish speci- 

 mens of B. spraguei received from Mr. Frost, from this species. The 

 name is scarcely appropriate, for specimens are not always badly in- 

 fested by larvae. ' ' 



Localities: Crandon and Ladysmith. None of the specimens was 

 infected with larvae. The largest measured 7 cm. in diameter ; the stipe 

 11 cm. long, and 1.5 cm. thick. The pileus was reddish-brown, convex, 

 covered with yellowish-brown tomentum. The margin was acute with 

 a sterile yellow band underneath, about 2 mm. broad. The tubes were 

 nearly free, greenish-yellow with dark red almost maroon small round- 

 ish mouths. 



The stipe tapered upward, was yellowish above and reddish below, 

 somewhat paler than the pileus, solid. The flesh was whitish to yellow- 



